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Roman Pravda is a seasoned Back End Developer with extensive experience in the e-learning sector and mobile applications. Currently at KnowledgeCity since November 2022, Roman has previously contributed to Imagespark from May 2018 to November 2022, where achievements include leading the development and refactoring of the Coursometer e-learning analytic system, designing a flexible reports export service, and developing a subscription system with payment gateway integration for the Courseditor project. Prior roles include working at Привет-Мобайл, where Roman created a PostgreSQL trigger for an advertising network, and at Эскиз, where development of an international business social network took place. Roman's technical expertise spans optimizing performance and efficient resource management within various backend systems.